DENSITY REVIEW SHEET
1. If 518. 0 g sample of a metal has a volume of 2.00 mL, what is the density of
the metal ?
D = ???? m = 518.0 g V = 2.00 mL
D = m/v = 518.0 g / 2.00 mL = 259 g/mL
2. If a 4.67 g sample of platinum metal has a volume of 67.4 mL, what is the
density of platinum in g/cm3 ?
D = ???? m = 4.67 g V = 67.4 mL
D = m / V = 4.67 g / 67.4 mL = 0.0693 or 6.93 x 10-2
g/mL
3. The volume (in mL) occupied by 35.6 g of mercury (density = 13.6 g/mL) is
V = ???? m = 35.6 g D = 13.6 g/mL
V = m/D so V = 35.6 g / 13.6 g/mL
V = 2.62 mL
4. At 20C the density of mercury is 13.6 g/cm3. What is the mass of 85.4 mL
of mercury at 20C ?
1.16 x 103 g
5. Find the volume of a piece of plastic having a density of 1.23 g/mL and a
mass of 1.0 x 104 g.
D = 1.23 g/mL V = ???? m = 1.0 x 104 g
V = m / D so V = (1.0 x 104 g)/(1.23 g/mL )
V = 8100 mL = 8.1 x 103 mL
6. Calculate the mass of a plastic brick measuring 5.00 cm by 2.50 cm by
4.50 cm and having a density of 1.26 g/cm3.
70.9 g
7. The density of copper is 8.92 g/mL. The mass of a piece of copper has a
volume of 78.0 mL is
m = ???? D = 8.92 g /mL V = 78.0 mL
m = DV =( 8.92 g /mL )( 78.0 mL ) = 696 g
8. A graduated cylinder contains 35.0 mL of water. An irregularly shaped object
is placed in the cylinder and the water level rises to the 41.2 mL mark. If the
object has a mass of 7.49 g, what is its density?
9. An empty graduated cylinder weighs 62.55 g. When filled with 87.6 mL of an
unknown liquid, it weighs 92.39 g. The density of the unknown liquid is
D = ????? V = 87.6 mL and m = 92.39 - 62.55 g =
29.84 g
D = m / v so D = 29.84 g / 87.6 mL
D = 0.341 g /mL
10. A solid object with a volume of 3.95 cm3 weighs 159 g. Would this object
float or sink in Hg if its density is 13.6 g/mL ? Explain
It would sink since it is more dense.
11. Copper has a density of 8.96 g/cm3. If a cylinder of copper weighing 75.36 g
is dropped into a graduated cylinder containing 35.7 mL of water, what will
be the new water level ?
V = ???? m = 75.36 g D = 8.96 g / cm3
V = m / D = 75.36 g / 8.96 g / cm3
V = 8.41 cm3 of Copper so the water level will go
up this much.
V read in graduated cylinder would be 8.41 + 35.7
= 44.1 mL
12. A chemist needs 69.45 g of bromine for an experiment. What volume should
she use ? density of bromine = 3.12 g/cm3
13. Fill in the missing quantities in the table below.
Substance
Density (g/mL)
Mass
Seawater
1.025
62.5 g
Diamond
5.7 g/mL
3.21 g
Beeswax
0.96
152.5 g
Oak wood
.931 g/mL
3.46 kg
Volume
61.0 mL
0.56 mL
160 g/mL
3716.3 mL
14. A sample of alcohol has a density of 0.82 g/mL. What does 96 mL of the
alcohol weigh ?
79 g
15. A sample containing 24.33 g of metal pellets is poured into a graduated
cylinder initially containing 21.7 mL of water, causing the water level in the
cylinder to rise to 32.6 mL. Calculate the density of the metal.
24.33g / 10.9 mL = 2.23 g / mL
16. A sample of organic liquid has a density of 5.41 g/mL. What does 57.6 mL of
the liquid weigh ?
312 g